9514 1404 393
Answer:
a) y = -18x +200
b) 38 gallons
Step-by-step explanation:
a)
The slope formula can be used to find the slope:
m = (y2 -y1)/(x2 -x1)
m = (110 -137)/(5 -3.5) = -27/1.5 = -18
The y-intercept can be found from ...
b = y -mx = 110 -(-18)(5) = 200
The slope-intercept equation describing the relation is ...
y = -18x +200
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b)
After 9 hours, the amount of gas remaining is ...
y = -18(9) +200 = -162 +200 = 38 . . . gallons remaining
